Sperrbereich
Sperrbereich is a German term for an area that is blocked or restricted to general access. Such zones are defined by authorities or property owners and are usually marked by signs, barriers, or fencing. Access is limited to authorized personnel, service providers, or individuals with explicit permission. The restrictions are established to protect public safety, national security, privacy, or the integrity of operations and information.
Common reasons for designating a Sperrbereich include security needs (military facilities, critical infrastructure, border controls), safety
Sperrbereiche are encountered in various settings, including airports and airfields, around military installations, around power plants
Related terms in German include Sperrzone and Sperrgebiet, which convey similar ideas of restricted areas but